在IDEA中配置Tomcat

第一步：选择这个方框

 

第二步：选择+号，找到Tomcat Server（Local） 

 

 

第三步：将红方框内填完整 

 

第四步：创建artifaces，选择Deployment–>Artia…选择 *.war exploded或 * .exploded 

 

第五步：选择Application server 

 

最后点击apply，然后ok

第六步：选择Tomcat 9，点击启动

 

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><!-- package 项目打包方式jar   java应用war  javaWeb应用--><groupId>org.example</groupId><artifactId>javaweb-02-maven</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging><name>javaweb-02-maven Maven Webapp</name><!-- FIXME change it to the project's website --><url>http://www.example.com</url><!--配置--><properties><!--项目的默认构建编码--><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><!--默认版本--><maven.compiler.source>1.7</maven.compiler.source><maven.compiler.target>1.7</maven.compiler.target></properties><!--项目依赖--><dependencies><!--具体依赖的jar包配置文件--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency></dependencies><!--项目构建用的东西--><build><finalName>javaweb-02-maven</finalName><pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --><plugins><plugin><artifactId>maven-clean-plugin</artifactId><version>3.1.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.8.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.22.1</version></plugin><plugin><artifactId>maven-war-plugin</artifactId><version>3.2.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin></plugins></pluginManagement></build>
</project>

Maven仓库：https://mvnrepository.com

Maven由于它的的约定大于配置，可能会遇到我们写的配置文件无法被导出或者生效的问题

解决方案：

<!--在build中配置resources，来防止我们资源导出失败的问题-->
<build><resources><resource><directory>src/main/resources</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>true</filtering></resource><resource><directory>src/main/java</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>true</filtering></resource></resources>
</build>